netdev - Re: [v1 PATCH 7/14] netfilter: Use rhashtable_lookup instead of lookup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150320222311.GC566@casper.infradead.org>
Date:	Fri, 20 Mar 2015 22:23:11 +0000
From:	Thomas Graf <tgraf@...g.ch>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Patrick McHardy <kaber@...sh.net>,
	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [v1 PATCH 7/14] netfilter: Use rhashtable_lookup instead of
 lookup_compare

On 03/21/15 at 09:10am, Herbert Xu wrote:
> On Fri, Mar 20, 2015 at 10:07:51PM +0000, Thomas Graf wrote:
> >
> > Attack by whom? If I read the nft_set code correctly then the only
> > way to add to an nft_set is via nfnetlink which requires
> > CAP_NET_ADMIN. My understanding was that the chain length based
> > growth is to counter hash seed attacks.
> 
> You cannot trust root in a namespace.

He might as well just run for (;;) to burn cycles in his namespace.
If you give away virtualized local privileges you better be ready
to restrict the resources consumed. 
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html